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Finding the Fourth Proportional to 5,610.99, 7,740.99 and 3,220.10

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Solution

The fourth proportional to 5,610.99, 7,740.99 and 3,220.10 is: 4,442.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,610.99 : 7,740.99 = 3,220.10 : x
  2. Step 2: Convert to fraction form
    5,610.99/7,740.99 = 3,220.10/x
  3. Step 3: Cross multiply
    5,610.99x = 7,740.99 × 3,220.10
  4. Step 4: Simplify right side
    5,610.99x = 24,926,723.19
  5. Step 5: Solve for x
    x = 24,926,723.19/5,610.99
  6. Step 6: Final answer
    x = 4,442.49

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.